Most canids use urine combined with preputial gland secretions to mark their territories. Many species of canids, including the fox use a raised-leg posture when urinating. The scent of a fox’s urine is very strong, especially in the winter right before mating season. Red foxes use their urine to mark their territories. The male fox raises his hind leg and sprays his urine forward, whereas female foxes squat down so that urine is sprayed in the ground between its hind legs.
In addition, foxes also spray urine to mark empty cache sites. Foxes take part in this spraying behavior as a way to remind themselves not to waste time investigating them again. Red foxes use various postures to urinate, depending on where they are leaving a scent mark.